console.writeline windows application equivalent - .NET (Core and Framework) Discussion Boards

robasmith15-Feb-06 9:27

15-Feb-06 9:27

Please excuse my ignorance on this whole .NET thing but I guess everyone in this field eventually gets around to it...

From what I understand, Windows Forms are the next generation of MFC designed for use in a .NET, managed code environment. Is that correct?

Does this mean I have to write managed code to use 3rd party api's that are built on Windows Forms (i.e., Dundas Chart, Gauge and Diagram products)?

Or, can I continue to write unmanaged code and still utilize Windows Forms based api's in C++ code? In other words, can I use the Dundas products in unmanaged C++ code?

Thanks in advance!

Bob

Re: Windows Forms and 3rd Party API's

Dave Kreskowiak15-Feb-06 14:32

Dave Kreskowiak

15-Feb-06 14:32

If the component is a managed code class library, then no you can't use it directly from unmanaged code. You'd have to go through a COM to get at the managed classes, if those classes are exposed to COM.

Exposing .NET Framework Components to COM[^]

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Converting from WinHelp to HTML Help

ellenu15-Feb-06 6:40

ellenu

15-Feb-06 6:40

I was wondering how much work is involved on the developer's side to convert an application to calling WinHelp to HTML (or Web) Help.

Are there some standard steps a programmer should go through to ensure this transition is clean and works properly? This is for a .NET environment.

If you've been through this, any information would be helpful.

Thank you,
ellenu

Flex Cell 2.0 .net Framework

welbert14-Feb-06 15:03

welbert

14-Feb-06 15:03

need help where to download a free full version of FlexCell 2.0 .net framework..... really appreciated if you can provide a link where i can download it for free...

tnx tnx tnx and more power............... Cool | :cool:

Re: Flex Cell 2.0 .net Framework

Judah Gabriel Himango15-Feb-06 8:12

Judah Gabriel Himango

15-Feb-06 8:12

You can download a free trial[^].

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Connor's Christmas Spectacular!
Judah Himango

The request failed with HTTP status 401: Unauthorized

Paul_Taylor14-Feb-06 14:12

Paul_Taylor

14-Feb-06 14:12

I'd love to hear from anyone with an opinion on how to go about resolving the problem below:

I have a Web Service that allows for files to be uploaded. Because of the default limitation of 4MB in parameters, I allow repeated calls to the file upload function sending chunks of the file at a time. The Web Service then appends the file together at the server end. All works perfectly when running the Web Service on my computer, but when running the Web Service on a server (of which I am an Administrator) there is an issue.

In my Test program that calls the Web Service I setup Authentication:
l_wsService.PreAuthenticate = True
l_wsService.Credentials = CredentialCache.DefaultCredentials

My first call to the file uploading function works successfully. It's the second call to the same function that fails with the error "The request failed with HTTP status 401: Unauthorized". The program never gets inside the function the second time, failing on this error before it reaches the function. After the first call I reload one parameter with the next chunk of the file but don't change anything to do with the service or it's authentication settings.

When I have a file small enough not to break into chunks I can upload it and make subsequent calls to different functions within this same Web Service without a problem. When I have multiple small files the uploading of the second file fails.

My questions are:
How can I get this to work?
If this is a security problem then why does it only occur on the second call to this one function?

Regards,
Paul

-- modified at 20:14 Tuesday 14th February, 2006

Re: The request failed with HTTP status 401: Unauthorized

Paul_Taylor14-Feb-06 18:30

Paul_Taylor

14-Feb-06 18:30

Worked out the answer:
l_wsService.PreAuthenticate = False

It seems to go against everything that I have read on other websites, but it works.

I'd still love for someone to explain exactly why.

Regards,
Paul.
Smile | :)

console.writeline windows application equivalent

LuluSailor14-Feb-06 8:06

LuluSailor

14-Feb-06 8:06

What is the windows based equivalent to System.Console.WriteLine? I read somewhere (but now cannot find where!) that when your are developing a Windows Application, you should avoid using System.Console.WriteLine and use something else instead.... what would this be? I want something very simple that I can quickly use just like System.Console.WriteLine.

Why I am asking...I am learning C# but prefer to learn using C# project that are Windows Applications. The examples in books use System.Console.Writeline. The code might contain a bunch of writeline statements for showing your results.

I know I could change the C# Output Type temporarily to Console Application and continue to use the System.Console.WriteLine. This solves my problem, but not in the way I would like to solve this. I thought there was some windows-based equivalent to System.Console.Writeline.

Re: console.writeline windows application equivalent

Dave Kreskowiak14-Feb-06 10:08

Dave Kreskowiak

14-Feb-06 10:08

Debug.WriteLine() is what you're looking for. The output will only show up on any TraceListener or the Output window in Visual Studio.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Modifing Interop dlls to use SecureString

dave_kinmond14-Feb-06 4:46

dave_kinmond

14-Feb-06 4:46

Hi,
I have a Windows Form in C# that I'm hosting an activeX control in, which the dev env has automatically created the interop dll for. Everything works fine however there is a security issue that I'd like to close.

One of the properties on the ActiveX is a write-only BSTR that you provide a password. The interop layer exposes this as a managed string meaning I can't clear the memory storing the string once I've assigned it to the property.

I'm trying to figure out if I can modify the MSIL to marshal the property call to use either a SecureString directly or and IntPtr created using the Marshal.SecureStringToGlobalAllocUnicode. My early attempts to disassemble/modify/reassemble the interop dll have been less than successful so any guidance or suggestions would be welcome.

Many Thanks

Dave

installation problem

united1814-Feb-06 3:28

united18

14-Feb-06 3:28

When I am trying to install .NET i am very much able to install 'Disc 1' and 'Component'. But after I install Disc 1 it does not prompt me to enter Disc 2 and even if I enter Disc 2 there is no setup file in it. Please suggest.
Confused | :confused:

UNI

Re: installation problem

KreativeKai16-Feb-06 4:28

KreativeKai

16-Feb-06 4:28

It would help to know what version, edition, media type, etc. Confused | :confused:

Lost in the vast sea of .NET

Run atlas under 1.1 .net framework

RUDOLFYAN13-Feb-06 18:43

RUDOLFYAN

13-Feb-06 18:43

As you all know, now hosting service only privde the .net 1.1 framework for me. I need do ajax using atlas, but I can't deploy my program on the .net 1.1 server.

Could anyone help me? i know the question is some of difficulty.

Thanks in advance.

Rudolf yan

Re: Run atlas under 1.1 .net framework

Kevin McFarlane14-Feb-06 10:19

Kevin McFarlane

14-Feb-06 10:19

You probably need to use Anthem.

http://www.codeproject.com/useritems/AnthemNET.asp[^]
http://sourceforge.net/projects/anthem-dot-net[^]

It works for both 1.1 and 2.0.

Kevin

Compact Framework toolbar

Federico Milano13-Feb-06 9:27

Federico Milano

13-Feb-06 9:27

Hi. I'm using a toolbar created with winForms on my Pocket PC 2002 app. The icons I assign to the toolbar buttons are 16x16 .png icons. I've 2 related problems: I'm actually seeing the "transparent" part of the icon (the toolbar background is gray, but I see the icon surrounded by a white square) and, in consequence, when I disable a toolbar button I don't see the shadow of the icon shape: I see the shadow of the square, so all the icons seem the same disabled. If I edit the icon and paint the "transparent" part with the toolbar background color I solve the first part of the problem, but when the icon is disabled I will still see an square.
I would really appreciate if anybody could tell me how to solve this problem or give me any clue.

Thanks,

Federico

"Automation Server can't create object"

Jader8913-Feb-06 6:28

Jader89

13-Feb-06 6:28

I get the above error when creating a new project in VS .NET 03, and I've googled it and found few things to try, none of which help... I've done the v5.6 script deal.. I've tried re-registering some .olb's and .dll's that a few people posted, which didnt help either... Any ideas on why im getting this out of the blue?

"There are 10 types of people, those who understand binary, and those who don't."
- Somebody, not me.

ICustomFormatter and IFormattable

Jason McBurney13-Feb-06 5:33

Jason McBurney

13-Feb-06 5:33

I am looking at these two different interefacing sytems within the framework, ICustomFormatter and IFormattable, and I trying to digest the pros and cons of each. http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/html/cpconcompositeformatting.asp[^] Discusses some of the ordering differences, but I would like your opinions!

What is the differnce in this two interfaces?

do you need to investigate an online backup[^] company

Handling Events inside a "while" clause

ninodago13-Feb-06 5:05

ninodago

13-Feb-06 5:05

Hi to all. I have a problem with my thesis. I'm realizing an application with VS .Net 2003 for PDA in C#.
I have a catalog stored into the PDA and I want to navigate into it.
I've builded a database which consists of 4 important tables: three categories tables (First, Second and Third) and the "Products" table.
I use a ListView object to navigate inside the categories. The code is this (I bolded the important part):

using System;

using System.Drawing;

using System.Collections;

using System.ComponentModel;

using System.Windows.Forms;

using System.Data.SqlServerCe;

using System.Data.SqlClient;

using System.Data;

using System.Reflection;

using System.IO;

namespace SmartDeviceApplication3

{

///

/// Form per sfogliare il catalogo - Form to navigate inside the catalog

///

public class FormSfogliaCatalogo : System.Windows.Forms.Form

{

private System.Windows.Forms.Panel panel1;

private System.Windows.Forms.Label label8;

private System.Windows.Forms.Label label7;

private System.Windows.Forms.Label label6;

private System.Windows.Forms.Label label5;

private System.Windows.Forms.PictureBox pictureBox3;

private System.Windows.Forms.PictureBox pictureBox2;

private System.Windows.Forms.PictureBox pictureBox1;

private System.Windows.Forms.PictureBox pictureBox4;

private System.Windows.Forms.MainMenu mainMenu1;

private System.Windows.Forms.ListView listViewCatalogo;

public FormSfogliaCatalogo()

{

//

// Required for Windows Form Designer support

//

InitializeComponent();

listViewCatalogo.Activation = ItemActivation.OneClick;

listViewCatalogo.View = System.Windows.Forms.View.SmallIcon;

//Declare the connection variable

SqlCeConnection sqlConn1 = new SqlCeConnection();

try

{

// Open a connection to the database

sqlConn1.ConnectionString = "Data Source =\\My Documents\\db.sdf";

sqlConn1.Open();

SqlCeCommand searchCommand = new SqlCeCommand();

searchCommand.Connection = sqlConn1;

searchCommand.CommandText = "SELECT * FROM TIPOLOGIA_PRIMARIA"; // it means select * from first category

// Execute and return the rows in the data reader object

SqlCeDataReader dR;

dR = searchCommand.ExecuteReader(CommandBehavior.CloseConnection);

int nFields = dR.FieldCount;

// Setup the columns in the listview using the fields in the table

listViewCatalogo.Clear();

listViewCatalogo.Columns.Add("Categoria", -1, HorizontalAlignment.Left);

// Fill the rows in the listview using the data in the rows

int nRow = 0;

while (dR.Read())

{

// Create an array of subitems for quick insertion

// The subitems will be all fields in the row except for

// the first field

String [] subitems = new String[nFields];

subitems[0] = dR[3].ToString();

// Insert a new item into the listview, and add the subitems at

// the same time. The item will be the first field in the row

ListViewItem item = new ListViewItem(subitems);

listViewCatalogo.Items.Add(item);

ImageList imageListSmall = new ImageList();

imageListSmall.ImageSize = new Size(30,30);

imageListSmall.Images.Add(LoadImage("Dir.bmp"));

listViewCatalogo.SmallImageList = imageListSmall;

listViewCatalogo.Items[nRow].ImageIndex = 0;

++nRow;

}

dR.Close();

}

catch (Exception ex)

{

// If an error occured alert the user

MessageBox.Show("Error: " + ex.Message);

}

finally

{

// Close the connection if necessary

if (sqlConn1.State == System.Data.ConnectionState.Open)

sqlConn1.Close();

}

//

// TODO: Add any constructor code after InitializeComponent call

//

}

///

/// Clean up any resources being used.

///

protected override void Dispose( bool disposing )

{

base.Dispose( disposing );

}

#region Windows Form Designer generated code

///

/// Required method for Designer support - do not modify

/// the contents of this method with the code editor.

///

private void InitializeComponent()

{

System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(FormSfogliaCatalogo));

this.listViewCatalogo = new System.Windows.Forms.ListView();

this.panel1 = new System.Windows.Forms.Panel();

this.label8 = new System.Windows.Forms.Label();

this.label7 = new System.Windows.Forms.Label();

this.label6 = new System.Windows.Forms.Label();

this.label5 = new System.Windows.Forms.Label();

this.pictureBox3 = new System.Windows.Forms.PictureBox();

this.pictureBox2 = new System.Windows.Forms.PictureBox();

this.pictureBox1 = new System.Windows.Forms.PictureBox();

this.pictureBox4 = new System.Windows.Forms.PictureBox();

this.mainMenu1 = new System.Windows.Forms.MainMenu();

//

// listViewCatalogo

//

this.listViewCatalogo.HeaderStyle = System.Windows.Forms.ColumnHeaderStyle.None;

this.listViewCatalogo.Location = new System.Drawing.Point(0, 56);

this.listViewCatalogo.Size = new System.Drawing.Size(256, 216);

this.listViewCatalogo.SelectedIndexChanged += new EventHandler(this.listViewCatalogo_SelectedIndexChanged);

this.Controls.Add(listViewCatalogo);

//

// panel1

//

this.panel1.BackColor = System.Drawing.Color.Gainsboro;

this.panel1.Controls.Add(this.label8);

this.panel1.Controls.Add(this.label7);

this.panel1.Controls.Add(this.label6);

this.panel1.Controls.Add(this.label5);

this.panel1.Controls.Add(this.pictureBox3);

this.panel1.Controls.Add(this.pictureBox2);

this.panel1.Controls.Add(this.pictureBox1);

this.panel1.Controls.Add(this.pictureBox4);

this.panel1.Size = new System.Drawing.Size(256, 56);

//

// label8

//

this.label8.Font = new System.Drawing.Font("Microsoft Sans Serif", 7.25F, System.Drawing.FontStyle.Regular);

this.label8.ForeColor = System.Drawing.Color.Blue;

this.label8.Location = new System.Drawing.Point(136, 32);

this.label8.Text = "Offerte e promozioni";

//

// label7

//

this.label7.Font = new System.Drawing.Font("Microsoft Sans Serif", 7.25F, System.Drawing.FontStyle.Regular);

this.label7.ForeColor = System.Drawing.Color.Blue;

this.label7.Location = new System.Drawing.Point(32, 32);

this.label7.Size = new System.Drawing.Size(80, 20);

this.label7.Text = "Cerca prodotto";

//

// label6

//

this.label6.Font = new System.Drawing.Font("Microsoft Sans Serif", 7.25F, System.Drawing.FontStyle.Regular);

this.label6.ForeColor = System.Drawing.Color.Blue;

this.label6.Location = new System.Drawing.Point(136, 8);

this.label6.Text = "Sfoglia catalogo";

//

// label5

//

this.label5.Font = new System.Drawing.Font("Microsoft Sans Serif", 7.25F, System.Drawing.FontStyle.Regular);

this.label5.ForeColor = System.Drawing.Color.Blue;

this.label5.Location = new System.Drawing.Point(32, 8);

this.label5.Size = new System.Drawing.Size(80, 20);

this.label5.Text = "Aggiornamento";

//

// pictureBox3

//

this.pictureBox3.Image = ((System.Drawing.Image)(resources.GetObject("pictureBox3.Image")));

this.pictureBox3.Location = new System.Drawing.Point(112, 8);

this.pictureBox3.Size = new System.Drawing.Size(20, 20);

this.pictureBox3.SizeMode = System.Windows.Forms.PictureBoxSizeMode.CenterImage;

//

// pictureBox2

//

this.pictureBox2.Image = ((System.Drawing.Image)(resources.GetObject("pictureBox2.Image")));

this.pictureBox2.Location = new System.Drawing.Point(8, 32);

this.pictureBox2.Size = new System.Drawing.Size(20, 20);

this.pictureBox2.SizeMode = System.Windows.Forms.PictureBoxSizeMode.CenterImage;

//

// pictureBox1

//

this.pictureBox1.Image = ((System.Drawing.Image)(resources.GetObject("pictureBox1.Image")));

this.pictureBox1.Location = new System.Drawing.Point(8, 8);

this.pictureBox1.Size = new System.Drawing.Size(20, 20);

this.pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.CenterImage;

//

// pictureBox4

//

this.pictureBox4.Image = ((System.Drawing.Image)(resources.GetObject("pictureBox4.Image")));

this.pictureBox4.Location = new System.Drawing.Point(112, 32);

this.pictureBox4.Size = new System.Drawing.Size(20, 20);

this.pictureBox4.SizeMode = System.Windows.Forms.PictureBoxSizeMode.CenterImage;

//

// FormSfogliaCatalogo

//

this.ClientSize = new System.Drawing.Size(258, 270);

this.Controls.Add(this.panel1);

this.Controls.Add(this.listViewCatalogo);

this.Menu = this.mainMenu1;

this.Text = "Catalogo";

}

#endregion

public void listViewCatalogo_SelectedIndexChanged(object sender, System.EventArgs e)

{

int sum = listViewCatalogo.SelectedIndices.Count;

int i;

i = listViewCatalogo.SelectedIndices[0];

if(listViewCatalogo.Items[i].Selected == true)

{

//to test the program

FormProdotto frm = new FormProdotto(i);

frm.Show();

return;

}

}

...

}

}

There are some problems:

1. If I deploy, I have no errors, but in executing phase I have error because the initialization of the listViewCatalogo.SelectedIndexChanged event is not correct, because it needs the items of the listview which are created dynamically (inside the "while dR.Read" clause);

2. If I put the eventhandler inside the "while clause", I have the problem that, for each row the listview creates dynamically, there is a call to my event (so I have X calls while I should have just one call, corresponding to the single item clicking).

I don't know where to initializes my event. Does anyone have a suggest?

Thank you.

Greetings from Italy

Nino

PS: Sorry for my bad English....

Re: Handling Events inside a "while" clause

HumanOsc13-Feb-06 5:49

HumanOsc

13-Feb-06 5:49

1.) You can use the SelectedIndex Property to check if an item is selected...

<br />
if(listView.SelectedIndex == -1)<br />
  return;<br />

2.) It's recommend to disabling the updateing mechanism when you are adding items...

<br />
// disable updating mechanism<br />
listView.BeginUpdate();<br />
<br />
while(...)<br />
{<br />
// adding items here<br />
}<br />
<br />
// enable updating mechanism<br />
listView.EndUpdate();<br />
<br />

By the way you should named you variables more significant...
Wink | ;)

Re: Handling Events inside a "while" clause

ninodago14-Feb-06 1:00

ninodago

14-Feb-06 1:00

HumanOsc wrote:
1.) You can use the SelectedIndex Property to check if an item is selected...

if(listView.SelectedIndex == -1)
return;

I don't have the definition SelectedIndex inside ListView. ('System.Windows.Forms.ListView' does not contain a definition for 'SelectedIndex')... I use VS .Net 2003 with CF 1.0.
I used this code, but I'm not sure if it has the same effect...
if (listViewCatalogo.SelectedIndices[0] == -1)
return;

Another question. In which point of the program should I use this code? Inside the definition of listViewCatalogo_SelectedIndexChanged event?

When I deploy I have the same errors. If I declare the control inside or outside the while clause I have this message: Error: index (I mean, the variable passed to the last testing form(FormProdotto).

Re: Handling Events inside a "while" clause

Guffa13-Feb-06 6:03

Guffa

13-Feb-06 6:03

Show only the relevand code, and use the pre tag to make it readable.

---
b { font-weight: normal; }

Re: Handling Events inside a "while" clause

ninodago13-Feb-06 22:55

ninodago

13-Feb-06 22:55

sorry, it was my first message and it was very important for me, I'll remember for the next time!
thank you

Re: Handling Events inside a "while" clause

HumanOsc14-Feb-06 1:27

HumanOsc

14-Feb-06 1:27

Ok, sorry it was my fault... Sometimes i mix two different classes...

I mean the SelectedItems Property...

<br />
if(listView.SelectedItems.Count == 0)<br />
  return;<br />

You should check the collection if it's contains items, before you get anyone...

Well, in your app in the SelectedIndex_Changed handler...

<br />
// get sure that one item is selected<br />
if(listViewCatalogo.SelectedItems.Count == 0)<br />
  return;<br />
<br />
i = listViewCatalogo.SelectedIndices[0];<br />
<br />

-- modified at 7:28 Tuesday 14th February, 2006

Re: Handling Events inside a "while" clause

ninodago14-Feb-06 6:02

ninodago

14-Feb-06 6:02

Thanks a lot, I made the changes and now the running is quite good!

Bye
Nino

Look Torino 2006 - - - - - FORZA ITALIA!!!

reading third party Snap-in information in MMC programatically

krompo13-Feb-06 4:36

krompo

13-Feb-06 4:36

hi everyone,

I would need to get access to third party snapins in MMC so I can read information from these MMC snapins and store this information somewhere else into a text file. I don't need to modify this information, I only need to retrieve it, so I don't need to work with MMC manually in GUI form but can create reports in text file form from these MMC snapins. Do you have any idea if there is a way how to get this information from 3rd party snapins programatically (if possible in a consistent way) ?

thanks & regards,

krompo

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